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MIAMI (CBSMiami) – An investigation is underway after two tractor trailers went up in flames behind a Hialeah business.

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Around 3:45 a.m., eight units and close to 30 firefighters responded to battle a fire at Sunshine Windows at 3251 W. Okeechobee Road.

When firefighters arrived at Sunshine Windows at 3251 W. Okeechobee Road around 3:45 a.m. they found a tractor-trailer filled with tires engulfed in flames. The fire is believed to have started in the cab and then spread to the rest of the truck.

According to officials, the fire started in one of two tractor-trailers parked up against the window company’s building. One of the tractor-trailers was filled with garbage the other loaded with tires–which added fuel to the fire.

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The cargo area of the truck which was enveloped in flame was filled with tires which made it tricky to put out.

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“That petroleum product when it’s melted is very difficult to control. It starts to harden and forms a cap on the top and then it’s very difficult to get to the products on the bottom,” said Hialeah Fire Captain Cesar Espinosa.

Hialeah firefighters tried using several thousand gallons of water–but that wasn’t enough. Over 100 gallons of foam was eventually brought in and was sprayed from the ladder by hand.

“Every time we pulled the water stream off the truck the flames would immediately flair and it was very dangerous for that building” said Capt. Espinosa.

The fire took about four hours to fight.

The cause of the fire has yet to be determined. No injuries were reported.

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Marybel Rodriguez